Trump could sign the order as soon as Friday morning before he leaves for Paris for a scheduled trip, the Journal reported, citing administration officials.

Those officials also told the newspaper that the plan is for the policy to be temporary, but they didn't provide a specific timeline.

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Trump, who in recent weeks has emphasized his hard-line immigration stances, said last week that he was "finalizing a plan" that would deny asylum to people who don't enter at ports of entry.

The president said his policy would be "totally legal" even though current law allows immigrants to seek asylum even if they don't come into the country via a port of entry.

He also said last week that the policy would be implemented through an executive order by this week.

"Under this plan, the illegal aliens will no longer get a free pass into the country by lodging meritless claims in seeking asylum," Trump said during a speech from the White House.

Trump has recently ramped up his anti-immigration rhetoric, focusing on a group of migrants who are fleeing violence in Central America and moving toward the southern U.S. border. Trump has characterized the migrants as violent, while claiming they pose a security threat to Americans.

The president has also called the caravan of migrants an "invasion" even though they remain hundreds of miles from the border.